IBM Types 8122 Parts list manual

ThinkCentre
™
Hardware Replacement Guide
Ty pe s 8122, 8123, 8124
Ty pe s 8131, 8137, 8138


ThinkCentre
™
Hardware Replacement Guide
Ty pe s 8122, 8123, 8124
Ty pe s 8131, 8137, 8138


First Edition (April 2005)
©Copyright International Business Machines Corporation 2005. All rights reserved.
US Government Users Restricted Rights –Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

Contents
Overview ..............v
Safety information for replacing CRUs......v
Safety information for replacing FRUs ......v
Additional information resources .......v
Tools required .............vi
Handling static-sensitive devices .......vi
Chapter 1. Locations .........1
Locating components ...........1
Locating controls and connectors on the front of the
computer ...............2
Locating connectors on the rear of the computer ..3
Identifying parts on the system board ......4
Chapter 2. Replacing hardware .....5
Removing the computer cover ........5
Pivoting or removing the optional hard disk drive
mounting bracket .............7
Removing and replacing the front bezel .....8
Replacing the power supply .........8
Replacing the system board assembly......12
Replacing the microprocessor ........19
Replacing amemory module ........25
Replacing an adapter ...........26
Replacing the hard disk drive ........27
Replacing an optical drive .........28
Replacing the diskette drive .........30
Replacing the keyboard ..........30
Replacing the mouse ...........31
Replacing the internal speaker ........31
Completing the installation .........33
Updating (flashing) BIOS from adiskette or
CD-ROM ...............34
©Copyright IBM Corp. 2005 iii

iv Hardware Replacement Guide

Overview
This guide is intended to be used by customers who are replacing Customer
Replaceable Units (CRUs) as well as trained service personnel who are replacing
Field Replaceable Units (FRUs). In this guide CRUs and FRUs will often be
referred to as parts.
This guide does not include procedures for all parts. It is expected that cables,
switches, and certain mechanical parts can be replaced by trained service personnel
without the need for step-by-step procedures.
Note: Use only the parts provided by IBM.
This guide contains procedures for replacing the following parts:
vPower supply
vSystem board
vMicroprocessor
vMemory modules
vOptional PCI adapter
vHard disk drive
vOptical drive
vDiskette drive
vKeyboard
vMouse
vInternal speaker
Safety information for replacing CRUs
Do not open your computer or attempt any repair before reading the “Important
safety information” in the Quick Reference that was included with your computer. If
you no longer have this copy of the Quick Reference, you can obtain one online
from the World Wide Web at http://www.ibm.com/pc/support.
Safety information for replacing FRUs
Do not attempt any repair before reading the “Important safety information” in the
Hardware Maintenance Manual (HMM) for the computer. You can find the HMM on
the World Wide Web at http://www.ibm.com/pc/support.
Additional information resources
If you have Internet access, the most up-to-date information for your computer is
available from the World Wide Web.
You can find the following information:
vCRU removal and installation instructions
vPublications
vTroubleshooting information
vParts information
vDownloads and drivers
vLinks to other useful sources of information
To access this information, go to http://www.ibm.com/pc/support.
©Copyright IBM Corp. 2005 v

Tools required
To replace some parts in your computer, you will need aflat-blade or Phillips
screwdriver. Additional tools might be needed for certain parts.
Handling static-sensitive devices
Static electricity, although harmless to you, can seriously damage computer
components.
When you are replacing apart, do not open the static-protective package
containing the new part until the defective part has been removed from the
computer and you are ready to install the new part.
When you handle parts and other computer components, take these precautions to
avoid static-electricity damage:
vLimit your movement. Movement can cause static-electricity to build up around
you.
vAlways handle parts and other computer components carefully. Handle
adapters, memory modules, system boards, and microprocessors by the edges.
Never touch any exposed circuitry.
vPrevent others from touching the parts and other computer components.
vBefore you replace anew part, touch the static-protective package containing the
part to ametal expansion-slot cover or other unpainted metal surface on the
computer for at least two seconds. This reduces static electricity in the package
and your body.
vWhen possible, remove the new part from the static-protective packaging, and
install it directly in the computer without setting the part down. When this is
not possible, place the static-protective package that the part came in on a
smooth, level surface and place the part on it.
vDo not place the part on the computer cover or other metal surface.
vi Hardware Replacement Guide

Chapter 1. Locations
This chapter provides illustrations to help locate the various connectors, controls
and components of the computer. To remove the computer cover, see “Removing
the computer cover” on page 5.
Locating components
The following illustration will help you locate the various components in your
computer.
1 Optical drive 6 System board
2 Memory modules 7 Lower drive cage (diskette drive and
hard disk drive)
3 Power supply 8 Internal speaker
4 PCI adapter connector 9 Diskette drive
5 Optional PCI adapter
©Copyright IBM Corp. 2005 1

Locating controls and connectors on the front of the computer
This section shows the various external connectors on the computer to which you
can attach external devices.
1
3
9
4
1 IEEE 1394 connector (some
models)
4 Microphone connector
2 USB connector 5 Headphone connector
3 USB connector
2Hardware Replacement Guide